Cleaning and Treatment of Ancient Metal Artifacts and Coins Part - 1 - One Introduction: Why does ancient metal deteriorate and what is that green and black stuff that covers artifacts? The metals from which...
Thanks for dropping by ....... When we first started on eBay in 2003, there were usually 200 to 300 listed Dzi Beads, of which 95% were all machine mass manufactured copies or imitations. Today , a simple...